Following public outrage, Lee said she used her own money that she had saved for months to make the purchase, according to the station.

She also lashed out at her critics in an expletive-filled rant on Instagram.

“This don’t make no sense,” she says in the 60-second video. “I am so tired of ya’ll social media and ya’ll Facebook people bashing me. Ya’ll don’t even know me. I was the best mother I was to my son.”

Her son, Tyshawn Lee, was shot and killed Monday after being lured into an alley on the city’s south side in what police say was an “absolutely hateful” killing motivated by his father’s alleged gang affiliations.

Early Sunday, a makeshift memorial for the boy in the alley was destroyed in a fire, the Chicago Sun-Times reported, according to Fox32.

Firefighters responded to a garage fire about 3 a.m., the Chicago Fire Department said. The memorial, which included several candles, was located next to the garage.

The fire department said the cause of the fire is under investigation.

Lee purchased a 2015 Chrysler 200, WLS-TV reported Sunday. Lee told the station she used her own money to make the down payment.